John Caldicott Cavell (12 January 1813 – 5 February 1887) was a department store proprietor and mayor of Oxford, England.
John Cavell was born in Bardwell, Suffolk, the son of Charles and Sarah Cavell, He married Sarah Elliston of Summertown, Oxford on 9 April 1835, at the age of 22.
She was the sister of Jesse Elliston, who owned a draper's shop in central Oxford.
Cavell's funeral took place at St Mary Magdalen Church on 10 February 1887.
He was buried in St Sepulchre's Cemetery off Walton Street.